WegGPU is a way nicer HAL if you're not an experienced graphics engineer. So even if you only target desktops, it's a valid choice.
On the web, WebGPU is only supported by Chrome-based browser engines at this point, and a lot of software developers us Firefox (and don't really like encouraging a browser monoculture), so it doesn't make a ton of sense to target browser based WebGPU for some people at this point.